N52 20mm x 2mm Strong Disc Magnets Rare Earth Neodymium Magnets Shape: Round Material: NdFeB Magnetic Material Product Size: 20mm x 2mm Grade: N52 Quantity: 20 Usage: 1. Acoustic field: the speaker, receiver, microphone, alarm, stage audio , car audio and so on. 2. Electronics: permanent magnetic actuator vacuum circuit breakers, magnetic relays, meters, sound meters, a reed switch, sensors. 3. Electrical field: VCM, CD / DVD-ROM, generators, motors, servo motors, micro motors, motors, vibration motors. 4. Machinery and equipment: magnetic separation, magnetic machinery. 5. Healthcare: magnetic health products and so on. 6. Wedding corsage badges, etc., can be replaced with a magnet attracts every other clothes pin, such as not to damage the dress. 7. For the overlying metal drawing board for fixing the drawing paper. Magnetic blackboard whiteboard fixed file drawings. 8. Advertising magnets available to replace the original fixtures at any time convenient to replace the ad content. 9. Models piling, you can use small magnets to connect two widgets. 10. Studio, bulk magnet can be used to adsorb screws and other parts, even wrenches and other tools. ! Warning These magnets are powerful and should be handled with great care. Do not allow children to play with them if they could get injured. Especially pay attention to the coin magnets. When acting two magnets can work together with such force that pieces of the magnets can splinter and cause injury. Keep those magnets away from pacemakers and magnetic storage devices such as mobile phones, debit cards and computers. Warnings: Keep out of reach of children. Do not handle magnets if you have any internal medical device. Do not place in mouth or any other part of the body. Swallowed magnets can stick to intestines causing serious injury or death. The Seller will not be held liable for any damage or injury caused by these magnets.